This is taken from Becky's signature:

"Don’t get too comfortable with who you are at any given time -- you may miss the opportunity to become who you want to be. " as said by JBJ at an out of his depth, fish out of water speech at Oxford University (maybe they will let him in with his 'doctorate' degree - hahaha).

I interpet this as Jon saying that his life is great, and the lives of most other people aren't. "You may miss the opportunity to become who you want to be" implies that he thinks that people who haven't 'achieved' what he has must automatically be stuck in a dead end job that they don't like and they are unhappy with.

Come on Jon, I bet the Oxford students were laughing at you afterwards: "that stupid rock star thinks he's the dog's b0ll0cks, I'd like to see him prove that e^(-x*x) cannot be integrated."